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MYFACES-4427: 5.0 Quarkus UberJar packaging support
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...ain/java/org/apache/myfaces/core/extensions/quarkus/deployment/FacesUberJarProcessor.java
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.apache.myfaces.core.extensions.quarkus.deployment; | ||
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| import static io.quarkus.deployment.pkg.PackageConfig.JarConfig.JarType.*; | ||
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| import java.io.ByteArrayOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.URL; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
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| import javax.xml.parsers.ParserConfigurationException; | ||
| import javax.xml.transform.TransformerException; | ||
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| import io.quarkus.deployment.IsNormal; | ||
| import org.atteo.xmlcombiner.XmlCombiner; | ||
| import org.jboss.logging.Logger; | ||
| import org.xml.sax.SAXException; | ||
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| import io.quarkus.deployment.annotations.BuildProducer; | ||
| import io.quarkus.deployment.annotations.BuildStep; | ||
| import io.quarkus.deployment.builditem.GeneratedResourceBuildItem; | ||
| import io.quarkus.deployment.pkg.PackageConfig; | ||
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| /** | ||
| * This class processes the faces configuration and web fragment XML files in an Uber JAR. | ||
| * It merges the contents of "META-INF/web-fragment.xml" and "META-INF/faces-config.xml" | ||
| * into single files if they are present in the resources. | ||
| */ | ||
| public class FacesUberJarProcessor | ||
| { | ||
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| private static final Logger log = Logger.getLogger(FacesUberJarProcessor.class); | ||
|
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| /** | ||
| * Merges specified XML files if the package type is UBER_JAR and generates them | ||
| * as resources in the Uber JAR. | ||
| * | ||
| * @param generatedResourcesProducer the producer to add generated resources | ||
| * @param packageConfig the package configuration to check for UBER_JAR type | ||
| */ | ||
| @BuildStep(onlyIf = IsNormal.class) | ||
| void uberJarMergedResourceBuildItems(BuildProducer<GeneratedResourceBuildItem> generatedResourcesProducer, | ||
| PackageConfig packageConfig) | ||
| { | ||
| if (packageConfig.jar().type() == UBER_JAR) | ||
| { | ||
| mergeAndGenerateResource("META-INF/web-fragment.xml", generatedResourcesProducer); | ||
| mergeAndGenerateResource("META-INF/faces-config.xml", generatedResourcesProducer); | ||
| } | ||
| } | ||
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| /** | ||
| * Merges all occurrences of the specified XML file found in the resources and | ||
| * generates a single combined version. | ||
| * | ||
| * @param filename the name of the XML file to be merged | ||
| * @param generatedResourcesProducer the producer to add the merged resource | ||
| */ | ||
| private void mergeAndGenerateResource(String filename, | ||
| BuildProducer<GeneratedResourceBuildItem> generatedResourcesProducer) | ||
| { | ||
| ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); | ||
| try | ||
| { | ||
| XmlCombiner combiner = new XmlCombiner(); | ||
| // Retrieve all instances of the specified file in the resources | ||
| List<URL> resources = Collections.list(getClass().getClassLoader().getResources(filename)); | ||
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| // Combine each resource file found | ||
| for (URL resource : resources) | ||
| { | ||
| try (InputStream is = resource.openStream()) | ||
| { | ||
| combiner.combine(is); | ||
| } | ||
| } | ||
| // Build the combined XML document | ||
| combiner.buildDocument(outputStream); | ||
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| // Produce the merged resource for inclusion in the Uber JAR | ||
| generatedResourcesProducer.produce(new GeneratedResourceBuildItem(filename, outputStream.toByteArray())); | ||
| } | ||
| catch (ParserConfigurationException | SAXException | TransformerException | IOException ex) | ||
| { | ||
| log.errorf("Unexpected error combining %s", filename, ex); | ||
| } | ||
| } | ||
| } |
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